package suanshu;

public class Demo1 {
    public static void main(String[] args) {
        int a, b, c, he, cha, ji, shang, yu;
        a = 10;
        b = 20;
        he = a + b;
        cha = a - b;
        ji = a * b;
        shang = a / b;
        yu = a % b;
        System.out.println(he);
        System.out.println(cha);
        System.out.println(ji);
        System.out.println(shang);
        System.out.println(yu);

    }
}
